Maven clearCheckSums
clearCheckSums
clears all checksums and nullifies the MD5SUM column of the DATABASECHANGELOG table so they will be re-computed on the next database update.
changesets that have been deployed will have their checksums re-computed, and pending changesets will be deployed.
Uses
clearCheckSums
is typically used when there is a [MD5Sum Check Failed]
error message and there is a need to clear the checksums from the DATABASECHANGELOG table.
Maven configuration
Liquibase Maven can be configured in multiple ways. One way is to define your Liquibase configuration properties in your pom.xml
file. To configure your pom.xml
file, refer to Configuring Liquibase Attributes in your Maven POM File.
Running the clearCheckSums
Maven goal
Running the clearCheckSums
goal requires a Maven project to be implemented.
To run the goal, type the following in your command prompt:
mvn liquibase:clearCheckSums

When successful, the clearCheckSums goal produces the following output:
[INFO] Executing on Database: jdbc:oracle:thin:@support.datical.net:1521:ORCL
[INFO] Clearing database change log checksums
[INFO] SELECT COUNT(*) FROM DATABASECHANGELOGLOCK
[INFO] SELECT COUNT(*) FROM DATABASECHANGELOGLOCK
[INFO] SELECT LOCKED FROM DATABASECHANGELOGLOCK WHERE ID=1 FOR UPDATE
[INFO] Successfully acquired change log lock
[INFO] SELECT MD5SUM FROM DATABASECHANGELOG WHERE MD5SUM IS NOT NULL AND ROWNUM=1
[INFO] UPDATE DATABASECHANGELOG SET MD5SUM = NULL
[INFO] Successfully released change log lock
clearCheckSums
optional Maven configuration attributes
Attribute | Definition |
---|---|
liquibase.changelogCatalogName
|
Specifies the catalog Liquibase will use to create your changelog tables. |
liquibase.changelogSchemaName
|
Specifies the schema Liquibase will use to create your changelog tables. |
liquibase.clearCheckSums
|
Boolean. Forces checksums to be cleared from the DATABASECHANGELOG table. Default value is: false. |
liquibase.databaseChangeLogLockTableName
|
Specifies the table name to use for the DATABASECHANGELOGLOCK table. |
liquibase.databaseChangeLogTableName
|
Specifies the table name to use for the DATABASECHANGELOG table. |
liquibase.databaseClass
|
Specifies the database object class. |
liquibase.defaultCatalogName
|
Specifies the default catalog name to use for the database connection. |
liquibase.defaultSchemaName
|
Specifies the default schema name to use for the database connection. |
liquibase.driver
|
Specifies the driver class name to use for the database connection. |
driverPropertiesFile
|
Specifies the location of a JDBC connection properties file which contains properties the driver will use. |
liquibase.emptyPassword
|
Deprecated. Boolean. Use an empty or null value for the password instead. Default value is: false. |
expressionVariables
|
Specifies a map-based collection of changelog properties to apply. |
expressionVars
|
Specifies a property-based collection of changelog properties to apply. |
liquibase.includeArtifact
|
Boolean. Includes a Maven project artifact in the class loader, which obtains the Liquibase properties file and changelog files. Default value is |
liquibase.includeTestOutputDirectory
|
Boolean. Includes the Maven test output directory in the class loader which obtains the Liquibase properties file and changelog files. Default value is |
liquibase.licenseKey
|
Specifies your Liquibase Pro license key. |
liquibase.outputDefaultCatalog
|
Boolean. Specifies whether to ignore the catalog or database name. Default value is: false. |
liquibase.outputDefaultSchema
|
Boolean. Specifies whether to ignore the schema name. Default value is: false. |
liquibase.outputFileEncoding
|
Indicates that you want to set the character encoding of the output file during the |
liquibase.password
|
Specifies the database password for the database connection. |
liquibase.promptOnNonLocalDatabase
|
Deprecated. Boolean. Controls whether users are prompted before executing changesets to a non-local database. Default value is: true. |
liquibase.propertyFile
|
Specifies the Liquibase properties file to use for configuration, like |
liquibase.propertyFileWillOverride
|
Boolean. Indicates that you want the |
liquibase.propertyProviderClass
|
Specifies the property provider, which must be a |
liquibase.server
|
Specifies the server ID in the Maven |
liquibase.skip
|
Boolean. Specifies whether to skip running Liquibase. The use of this attribute is not recommended but can be used when needed. Default value is: false. |
systemProperties
|
Specifies a list of system properties you want to pass to the database. |
liquibase.url
|
Specifies the database URL you want to use to execute Liquibase. |
liquibase.username
|
Specifies the database username for the database connection. |
liquibase.verbose
|
Boolean. Controls the amount of output detail when you call the plugin. Default value is: false. |